Part 7, 1929] FABACEAE: GALEGEAE 415 



3 1 . Cystium pardalotum Rydberg, sp. nov. 



A perennial; stem 1-2 dm. high, flexuose, branched, sparingly strigulose; leaves ascending, 

 3-6 cm. long; stipules lanceolate to deltoid, 3 mm. long; leaflets 1 1-15, obovate, 5-7 mm. long, 

 rounded or retuse at the apex, glabrous on both sides; peduncles 3-6 cm. long; racemes 2-4 

 cm. long; bracts lanceolate, 1-2 mm. long; calyx white-hairy, the tube 4 mm. long, the teeth 

 subulate, scarcely 1 mm. long; corolla purplish, 12 mm. long; banner narrowly obovate, retuse; 

 wings shorter, the blade lanceolate, acutish; keel-petals still shorter, the blade broadly lunate; 

 pod obliquely ovoid, about IS mm. long, 9 mm. wide and somewhat thicker, glabrous, brown- 

 spotted, tapering and upturned at the apex. 



Type collected in the Mohave Desert, California, in May 1893, Dr. A. Davidson (herb. Univ. 

 Minn.). 



32. Cystium latum (M. E. Jones) Rydberg. 



Astragalus diphysus lalus M. E. Jones, Zoe 3: 287. 1893. 



Astragalus lalus M. E. Jones, Zoe 4: 272. 1893 



Astragalus lentiginosus latus M. E. Jones, Rev. Astrag. 125. 1923. 



A perennial, with a cespitose caudex; stems ascending, 1-2 dm. high, with short internodes; 

 leaves about 1 dm. long, stipules deltoid, 4-5 mm. long; leaflets 13-17, obovate or oval or 

 obcordate, rounded to retuse at the apex, 5-10 mm. long, glabrous, or sparingly hairy beneath 

 on the midrib; peduncles 1-4 cm. long; racemes short; bracts lanceolate, 2-3 mm. long; calyx 

 glabrous or with a few scattered black hairs, the tube cylindric, 7 m. long, the teeth subulate, 

 2 mm. long; corolla light-purple, 16-20 mm. long; banner retuse, narrowly obovate; wings 

 nearly as long, the blade lance-obovate ; keel-petals shorter, the blade broadly lunate, rounded 

 and dark at the apex; pod round-ovoid, mottled, abruptly contracted into a short tip; seeds 

 brown, obliquely reniform, 2 mm. long. 



Typk locality: Shell Creek Range [Aurum ?], Nevada. 



Distribution: Nevada. 



Illustration: M. E. Jones, Rev. Astrag. pi. 24. 



33. Cystium MacDougali (Sheldon) Rydberg. 



Astragalus MacDougali Sheldon, Minn. Bot. Stud. 1: 169. 1894. 



Astragalus lentiginosus MacDougali M. E. Jones, Proc. Calif. Acad. II. 5: 673. 1895. 



A cespitose perennial; stems glabrous or slightly pubescent when young, 2-2.5 dm. high, 

 decumbent at the base, striate; leaves ascending, 6-9 cm. long; stipules deltoid, acuminate, 

 reflexed, 2-3 cm. long; leaflets 13-19, narrowly obovate, obtuse to retuse, glabrous on both 

 sides, or sparingly hairy beneath; peduncles 4-5 cm. long; racemes dense, of about the same 

 length; bracts ovate, 2 mm. long; calyx strigose, the tube 3-4 mm. long, the teeth subulate, 

 1-1.5 mm. long; corolla 13-16 mm. long; pod glabrous, broadly ovate or subglobose, 10-15 

 mm. long, about as wide, obcompressed, sulcate on both sutures. 



Type locality: Flagstaff, Arizona. 

 Distribution: Type locality and vicinity. 

 Illustration: M. E. Jones, Rev. Astrag. pi. 23. 



52. ONIX Medic. Vorl. Churph. Phys. Ges. 2: 374. 1787. 



Leafy-stemmed perennials. Leaves odd-pinnate, with many leaflets and distinct stipules. 

 Flowers in peduncled axillary racemes. Calyx- tube campanulate. Corolla white or yellowish. 

 Banner obovate, subsessile, retuse. Wings clawed, the blades lunate-oblanceolate, with a 

 large basal auricle. Keel-petals shorter and broader, the blades almost semicircular. Stamens 

 diadelphous (9 and 1), the sheath straight, the free portion of the filaments abruptly bent 

 upwards. Ovary stipitate, rather few-ovuled, the style bent upwards, the stigma minute. 

 Pod membranous, inflated, triangular or cordate in cross-section, completely 2-celled, in age 

 splitting through the septum. Seeds obliquely reniform. 



Type species, Astragalus galegiformis L. 



